A card reader may comprise a power supply part for the card reader, a peripheral device including at least an inlet part for connecting a power cable to the power supply part from outside, a card reader part, a lower case for housing the power supply part and the peripheral device which is disposed in a linear manner, an upper case for housing the card reader part, and a recessed part for allowing the power cable to be inserted into the inlet part for connection. The inlet part and the recessed part for allowing the power cable to insert into the inlet part may be arranged in a linear manner and parallel to the power supply part.